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Properties Of Perfluoro Alkoxy (PFA)

Property ASTM Test Method Unit Value

Thermal
Nominal Melting Point D3418 °C 302–310
(°F) (575–590)
Coefficient of Linear Thermal Expansion 21–100° C D696 mm/mm/°C 14 x 10–5
(70–212°F) (in./in./°F) (7.8 x 10–5)
100–149°C mm/mm/°C 18 x 10–5
(212–300°F) (in./in./°F) (9.8 x 10–5)
149–208°C mm/mm/°C 22 x 10–5
(300–408°F) (in./in./°F) (12.1 x 10–5)
Thermal Conductivity cal/(cm·sec·cm2·°C) 6×10-6
(BTU/(in·hr·ft2·°F)) (1.3)
Upper Service Temperature — °C 260
(°F) (500)
Flow Rate D3307 g/10 min 2

Mechanical
Density 23°C (73°F) D792 g/cm (lb/in3) 2.15 (0.078)
Tensile Strength 23°C (73°F) D3307 MPa (psi) 28 (4,000)
250°C (482°F) 14 (2,000)
Specific Gravity D792 — 2.12–2.17
Tensile Yield Strength 23°C (73°F) D3307 MPa (psi) 15.2 (2,200)
Ultimate Elongation 23°C (73°F) D3307 % ~300
250°C (482°F) % ~500
Flexural Modulus 23°C (73°F) D790 MPa (psi) 625 (90,000)
250°C (482°F) 69 (10,000)
Impact Strength, IZOD No Break
Coefficient of Friction 23°C (73°F) on steel — 0.2
Hardness Durometer D2240 — D55
MIT Folding Endurance 0.18–0.20 mm
(0.007–0.008 in.)		 D2176 cycles *500,000

Electrical
Dielectric Strength, Short Time 0.25 mm
(0.010 in.)		 D149 kV/mm
(V/mil)		 80 (2,000)
Dielectric Constant, 60–106 Hz D150 — 2.03
Dissipation Factor, 60–106 Hz D150 — 0.0001
Volume Resistivity D257 ohm·cm 1018

General
Water Absorption, 24 hr D570 % < 0.03
Weather and Chemical Resistance — — Outstanding
Refractive Index 1.34
Limiting Oxygen Index D2863 % > 95

Additional References